Sealing ring protection sheet for puncture outfit, end sealing assembly and puncture outfit

Abstract

The sealing ring protection sheet for the puncture outfit is a strip-shaped protection sheet. The strip-shaped protection sheet is made of flexible and / or elastic materials, is of a strip-shaped structure, and is of a cylindrical or similar-cylindrical structure with a crack in the lower portion after being connected with the forming positioning piece. After the sealing ring protection pieces for the puncture outfit are installed in the funnel-shaped sealing ring, the protection pieces are alternately distributed after being automatically deformed to form a funnel shape, the funnel-shaped sealing ring is protected, and the end sealing assembly is formed. When the instrument is withdrawn, as the width of the single protection sheet is very small, the single protection sheet is easy to deform and does not cause movement obstruction to the instrument, the instrument is prevented from being stuck or being unsmooth in movement due to large movement resistance, and clinical use is ensured. Due to the fact that the puncture outfit is provided with the end sealing assembly, good puncture resistance is guaranteed, and low motion resistance can be kept for a long time.

Description

Technical Field

[0001] This invention relates to a surgical instrument, and more particularly to a sealing ring protector, end sealing assembly, and trocar used in laparoscopic surgery. Background Technology

[0002] Laparoscopic surgery is becoming increasingly widespread, and to avoid iatrogenic infections, the number of disposable trocars used in laparoscopic surgery is also increasing. Maintaining a dynamic seal of the trocar during frequent instrument insertion and removal is crucial for the smooth progress of the surgery. Furthermore, various surgical instruments of different shapes are used during the procedure; therefore, the trocar must be adaptable to these different shapes to facilitate instrument insertion and withdrawal, and the process of instrument insertion and withdrawal must maintain low resistance to ensure smooth instrument movement.

[0003] In existing technologies, the commonly used radial sealing ring is a funnel-shaped sealing ring. To prevent the sealing ring from being punctured by surgical instruments and causing leakage during prolonged surgical procedures, a protective plate is usually installed on the upper part of the funnel-shaped sealing ring. This allows the instrument to move inward along the surface of the protective plate through the radial sealing ring when entering or exiting the trocar. The design of the protective plate allows the thickness of the sealing ring to be minimized while maintaining the sealing system's performance, thereby reducing the resistance caused by the sealing ring to the entry and exit of instruments. However, conversely, the protective plate itself can increase the resistance to the movement of instruments. Especially for irregularly shaped surgical instruments, such as figure-eight forceps, or surgical instruments with raised or recessed features, the protective plate in existing technologies is embedded in the raised or recessed areas, creating significant resistance when the surgical instrument is inserted or withdrawn.

[0004] Therefore, it is necessary to improve the existing sealing ring protection plate to provide sufficient protection for the sealing ring while further reducing the movement resistance caused by the protection plate to the instrument's entry and exit. Summary of the Invention

[0005] The sealing ring protection sheet for trocars of the present invention uses a strip-shaped multi-piece protection sheet design. The funnel-shaped structure formed by the alternating distribution of the protection sheet after automatic deformation effectively protects the funnel-shaped sealing ring. Since the protection sheet adopts a multi-piece stacking method, it can effectively avoid the situation where the instrument may be embedded in the protection sheet during the insertion and removal process, resulting in excessive movement resistance, thus ensuring the smooth progress of the surgical procedure.

[0006] The present invention relates to a sealing ring protection sheet for a puncture device, characterized in that: the sealing ring protection sheet 2 for the puncture device is a strip-shaped protection sheet 22;

[0007] A. The strip-shaped protective sheet 22 is made of flexible and / or elastic material and has a strip-shaped structure; the strip-shaped protective sheet 22 includes a connecting end 22-1 and a protective sheet 22-2;

[0008] B. The strip-shaped protective sheet 22 includes at least two protective sheets 22-2, and the protective sheets 22-2 are disposed below the connecting end 22-1 and distributed along the length direction of the connecting end 22-1;

[0009] C. The strip-shaped protective sheet 22 is connected end to end to form a cylindrical or near-cylindrical structure with cracks 22-21 at the bottom; after the sealing ring protective sheet 2 for the puncture device is installed into the funnel-shaped sealing ring 1, the protective sheet 22-2 automatically deforms and is distributed alternately to form a funnel shape, which fits against the funnel surface of the funnel-shaped sealing ring 1 to protect the funnel-shaped sealing ring 1.

[0010] The sealing ring protective sheet for the puncture device of the present invention is made of a soft elastic material as a whole. In its unfolded state before assembly, it is a thin strip structure. After the ends are connected, it can be rolled into a cylindrical or similar cylindrical structure, such as forming a cylindrical structure around the forming positioning member 21. The crack 22-21 is formed between the protective sheets 22-2 at the lower end of the connecting end 22-1. After the funnel-shaped sealing ring 1 is installed, the alternating distribution of the automatically deformed protective sheets 22-2 forms a funnel shape, which can fit against the funnel surface of the funnel-shaped sealing ring 1 to protect the funnel-shaped sealing ring 1.

[0011] When the instrument enters, the protective sheet 22-2 conforms to the funnel-shaped sealing ring 1 along the funnel direction, preventing the instrument from directly scratching the sealing ring 1. When the instrument exits, the protective sheet 22-2, with its small width, deforms easily without hindering the movement of the instrument. Therefore, it effectively prevents the instrument from getting stuck or experiencing excessive resistance, making it very convenient for clinical use. Because the protective sheet 22-2 is designed as a thin strip, it can automatically deform and distribute itself alternately. Therefore, it does not require pre-forming and can adapt well to different sealing ring sizes and structures, making it widely applicable in practical applications. Furthermore, the integrated design of the connecting end 22-1 allows for easy connection and installation with the molded positioning part 21, effectively solving the problem of complex assembly processes for multi-piece protective sheets and resulting in very low actual production costs.

[0012] The strip-shaped protective sheet 22 is a thin rectangular strip structure. The cracks 22-21 are distributed along the width direction, and the length of the cracks 22-21 is not less than 1 / 2 of the width of the rectangular strip structure. Preferably, the length of the cracks 22-21 is more than 2 / 3 of the width of the rectangular strip structure. This allows for better automatic deformation and prevents the instrument from getting stuck during withdrawal due to the protective sheet 22-22's inability to move independently, thus avoiding excessive resistance to movement.

[0013] The strip-shaped protective sheet 22 comprises six or more of the protective sheets 22-2. To ensure that the protective sheet 22-2 is a small, thin strip structure, achieving the required protective effect while ensuring good deformability and smooth entry and exit of instruments, the number of the protective sheets 22-2 can be set as large as possible, usually at least six or more.

[0014] The protective plate 22-2 is rectangular, trapezoidal, triangular, or arc-shaped. The protective plate 22-2 is typically designed as a narrow rectangle. In practical applications, to facilitate instrument ejection and prevent sharp edges from accidentally jamming the instrument, the protective plate 22-2 can also be designed as trapezoidal, arc-shaped, or other shapes. The applicant has only specifically illustrated the above-mentioned shapes here. In practical applications, those skilled in the art can design different shapes as needed. The applicant will not provide examples of each shape here, but none of them depart from the scope of protection of this application.

[0015] The end sealing assembly of the present invention includes the sealing ring protection piece 2 for the puncture device.

[0016] The end sealing assembly 20 includes a sealing ring protection piece 2 for the puncture device, a funnel-shaped sealing ring 1, and a molded positioning member 21. The sealing ring protection piece 2 for the puncture device is connected to the molded positioning member 21 through the connecting end 22-1, forming a cylindrical or near-cylindrical structure with a crack 22-21 at the bottom. The funnel-shaped sealing ring 1 is provided with an installation position 11. The molded positioning member 21 has a structure that matches the installation position 11 and is embedded in the installation position 11. The protection piece 22-2 automatically deforms and is alternately distributed to form a funnel shape, which fits against the funnel surface of the funnel-shaped sealing ring 1 to constitute the end sealing assembly 20.

[0017] The connecting end 22-1 is installed around the molded positioning member 21, and the crack 22-21 is formed between the protective plates 22-2. After the funnel-shaped sealing ring 1 is inserted, the alternating distribution of the automatically deformed protective plates 22-2 forms a funnel shape, which fits against the funnel surface of the funnel-shaped sealing ring 1, thus protecting the funnel-shaped sealing ring 1. A single sealing ring protective plate 2 for the puncture device can be used to form a cylindrical structure around the molded positioning member 21, or multiple sealing ring protective plates 2 for the puncture device can be used to sequentially form a cylindrical structure around the molded positioning member 21.

[0018] The molded positioning component 21 is provided with an annular positioning groove 21-1, and the connecting end 22-1 is a sheet-like or strip-like structure. The connecting end 22-1 is embedded in the annular positioning groove 21-1 to form a cylindrical structure. This embedded connection method of the positioning groove and the sheet-like structure makes installation very convenient, and the molded positioning component 21 can be made with a smooth outer surface, which can fit and fix well with the funnel-shaped sealing ring 1.

[0019] The molded positioning component 21 is provided with a positioning pin 21-2, and the connecting end 22-1 is provided with a connecting hole 22-11. The connecting hole 22-11 is embedded in the positioning pin 21-2 to connect the strip-shaped protective piece 22 to the molded positioning component 21. This connection method of positioning pin and connecting hole can effectively prevent the strip-shaped protective piece 22 from detaching from the molded positioning component 21, making the connection more secure.

[0020] The applicant has only provided specific examples of the two connection methods between the strip-shaped protective sheet 22 and the molded positioning member 21. In practical applications, those skilled in the art can design different connection methods as needed, such as bonding, snap-fit, and other methods. The applicant will not provide specific examples here, but none of them will depart from the scope of protection of this application.

[0021] The molded positioning element 21 is made of rigid medical material. The molded positioning element 21 is usually made of medical materials with a certain degree of rigidity, such as PC and PP. Because the molded positioning element 21 has good rigidity, when it is embedded in the mounting position 11, the mounting position 11 can well wrap the molded positioning element 21, and the molded positioning element 21 is less likely to fall out.

[0022] The molding positioning component 21 can be a ring structure, a funnel-shaped structure, or an elliptical mechanism. The molding positioning component 21 can adopt a simple ring structure for easy installation, or it can adopt a funnel-shaped structure to fit the funnel-shaped sealing part of the funnel-shaped sealing ring 1 as needed, or it can be designed into an elliptical or other shapes according to the product appearance requirements. The applicant will not give examples here, but none of them are outside the scope of protection of this application.

[0023] To match different installation structures, the end sealing assembly 20 can also be used with other connection structures such as positioning plates to achieve effective installation of the puncture device of the present invention.

[0024] The puncture device of the present invention includes the sealing ring protective piece 2 for the puncture device.

[0025] The puncture device 900 includes the end sealing assembly 20.

[0026] The puncture device 900 includes a puncture rod 100 and a puncture sheath 200; the puncture sheath 200 includes an end cap 201 and a cannula assembly 202, and the end sealing assembly 20 is embedded between the upper shell 201-1 and the lower shell 201-2 of the end cap 201.

[0027] The puncture sheath 200 includes an end cap 201 and a cannula assembly 202. The cannula assembly 202 is located at the distal end of the end cap 201. The cannula assembly 202 can be integrally manufactured with the end cap 201, or it can be connected as a whole through a detachable connection. The end cap 201 includes an upper shell 201-1 and a lower shell 201-2. A positioning pressure ring 3, the end sealing assembly 20, and an inner cavity seal 4 are sequentially arranged between the upper shell 201-1 and the lower shell 201-2. When the instrument is inserted, the funnel-shaped sealing ring 1 wraps around the instrument to seal it. When the instrument is withdrawn, the inner cavity seal 4 resets under the action of intra-abdominal air pressure to achieve a seal.

[0028] The puncture device 900 of the present invention is equipped with the end sealing assembly 20, which is composed of the sealing ring protective sheet of the present invention for puncture devices. During clinical use, it not only ensures good puncture resistance, but also maintains very low movement resistance for a long time, making the clinical use process very safe and convenient.

[0029] The sealing ring protective sheet for the puncture device of the present invention is a strip-shaped protective sheet 22. The strip-shaped protective sheet 22 includes a connecting end 22-1 and protective sheets 22-2. The strip-shaped protective sheet 22 contains at least multiple protective sheets 22-2, which are disposed below the connecting end 22-1. The strip-shaped protective sheet 22 is made of flexible and / or elastic material, has a strip-shaped structure, and after being connected to the molded positioning member 21, forms a cylindrical or near-cylindrical structure with a slit 22-21 at the bottom. After the sealing ring protective sheet 22 for the puncture device is installed inside the funnel-shaped sealing ring 1, the protective sheets 22-2 automatically deform and are alternately distributed to form a funnel shape, fitting against the funnel surface of the funnel-shaped sealing ring 1 to protect the funnel-shaped sealing ring 1. When the instrument is withdrawn, the protective plate 22-2, being very narrow, deforms easily without hindering the movement of the instrument. Therefore, it effectively prevents the instrument from getting stuck or experiencing excessive resistance, making it very convenient for clinical use. The integrated design of the connecting end 22-1 allows for easy connection and installation with the molded positioning component 21, effectively solving the problem of complex assembly processes for multi-piece protective plates and resulting in very low actual production costs. Because the puncture device 900 of this invention is equipped with the end-sealing assembly 20, which consists of the sealing ring protective plate of this invention, it ensures excellent puncture resistance and maintains very low movement resistance for extended periods during clinical use, making it very safe and convenient. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the sealing ring protective sheet for the puncture device of the present invention when it is unfolded.

[0031] Figure 1-1 This is a schematic diagram of the structure of the sealing ring protective sheet of the present invention for a puncture device, including the connecting hole, when unfolded.

[0032] Figure 2 This is a three-dimensional structural diagram of a molded positioning component containing an annular positioning groove.

[0033] Figure 2-1 This is a schematic diagram of a strip-shaped protective sheet embedded in a molded positioning component to form a cylindrical structure.

[0034] Figure 2-2 yes Figure 2-1 A sectional view.

[0035] Figure 3 This is a three-dimensional structural diagram of a molded positioning component equipped with positioning pins.

[0036] Figure 3-1 This is a schematic diagram of a strip-shaped protective sheet being installed on a molded positioning part through connecting holes to form a cylindrical structure.

[0037] Figure 4 This is a schematic diagram of the end sealing assembly of the present invention.

[0038] Figure 4-1 yes Figure 4 AA sectional view.

[0039] Figure 4-2 yes Figure 4-1 Enlarged view of point B.

[0040] Figure 5 This is a schematic diagram of the puncture sheath of the puncture device of the present invention.

[0041] Figure 5-1 yes Figure 5 A sectional view.

[0042] Figure 6 This is a schematic diagram of the puncture device of the present invention.

[0043] In the above figure:

[0044] 1 is a funnel-shaped sealing ring, 2 is a sealing ring protection piece for the puncture device, 3 is a positioning pressure ring, 4 is an inner cavity seal, 20 is an end sealing assembly, 100 is the puncture device, 200 is the puncture sheath, 201 is the end cap, 202 is the cannula assembly, 900 is the puncture device; 201-1 is the upper shell, and 201-2 is the lower shell.

[0045] 11 is the mounting position, 21 is the molded positioning part, 22 is the strip-shaped protective plate; 21-1 is the annular positioning groove, 21-2 is the positioning pin, 22-1 is the connecting end, 22-2 is the protective plate; 22-11 is the connecting hole, 22-21 is the crack. Detailed Implementation

[0046] Example 1: The sealing ring protective sheet for puncture instruments of the present invention

[0047] refer to Figure 1 and Figure 1-1 In this embodiment, the sealing ring protection piece 2 for the puncture device is a strip-shaped protection piece 22.

[0048] The strip-shaped protective sheet 22 is made of flexible and / or elastic material and has a strip-shaped structure; the strip-shaped protective sheet 22 includes a connecting end 22-1 and a protective sheet 22-2.

[0049] refer to Figure 1 and Figure 1-1 The strip-shaped protective sheet 22 includes at least two protective sheets 22-2, which are disposed below the connecting end 22-1 and distributed along the length direction of the connecting end 22-1.

[0050] refer to Figure 2-1 and Figure 3-1 The strip-shaped protective sheet 22 is connected end to end to form a cylindrical or near-cylindrical structure with cracks 22-21 at the bottom; after the sealing ring protective sheet 2 for the puncture device is installed into the funnel-shaped sealing ring 1, the protective sheet 22-2 automatically deforms and is alternately distributed to form a funnel shape, which fits against the funnel surface of the funnel-shaped sealing ring 1 to protect the funnel-shaped sealing ring 1.

[0051] The strip-shaped protective sheet 22 is a thin rectangular strip structure. The cracks 22-21 are distributed along the width direction, and the length of the cracks 22-21 is not less than 1 / 2 of the width of the rectangular strip structure. Preferably, the length of the cracks 22-21 is more than 2 / 3 of the width of the rectangular strip structure. This allows for better automatic deformation and prevents the instrument from getting stuck during withdrawal due to the protective sheet 22-22's inability to move independently, thus avoiding excessive resistance to movement.

[0052] The strip-shaped protective sheet 22 comprises six or more of the protective sheets 22-2. To ensure that the protective sheet 22-2 is a small, thin strip structure, achieving the required protective effect while ensuring good deformability and smooth entry and exit of instruments, the number of the protective sheets 22-2 can be set as large as possible, usually at least six or more.

[0053] The protective plate 22-2 is rectangular, trapezoidal, triangular, or arc-shaped. The protective plate 22-2 is typically designed as a narrow rectangle. In practical applications, to facilitate instrument ejection and prevent sharp edges from accidentally jamming the instrument, the protective plate 22-2 can also be designed as trapezoidal, arc-shaped, or other shapes. The applicant has only specifically illustrated the above-mentioned shapes here. In practical applications, those skilled in the art can design different shapes as needed. The applicant will not provide examples of each shape here, but none of them depart from the scope of protection of this application.

[0054] In this embodiment, the sealing ring protective sheet for the puncture device is made of a soft, elastic material as a whole. In its unfolded state before assembly, it is a thin strip structure. After the ends are connected, it can be rolled into a cylindrical or similar cylindrical structure, such as forming a cylindrical structure around the forming positioning member 21. The crack 22-21 is formed between the protective sheets 22-2 at the lower end of the connecting end 22-1. After the funnel-shaped sealing ring 1 is installed, the alternating distribution of the automatically deformed protective sheets 22-2 forms a funnel shape, which can fit against the funnel surface of the funnel-shaped sealing ring 1 to protect the funnel-shaped sealing ring 1.

[0055] When the instrument enters, the protective sheet 22-2 conforms to the funnel-shaped sealing ring 1 along the funnel direction, preventing the instrument from directly scratching the sealing ring 1. When the instrument exits, the protective sheet 22-2, with its small width, deforms easily without hindering the movement of the instrument. Therefore, it effectively prevents the instrument from getting stuck or experiencing excessive resistance, making it very convenient for clinical use. Because the protective sheet 22-2 is designed as a thin strip, it can automatically deform and distribute itself alternately. Therefore, it does not require pre-forming and can adapt well to different sealing ring sizes and structures, making it widely applicable in practical applications. Furthermore, the integrated design of the connecting end 22-1 allows for easy connection and installation with the molded positioning part 21, effectively solving the problem of complex assembly processes for multi-piece protective sheets and resulting in very low actual production costs.

[0056] Example 2: The sealing assembly at the end of the puncture device of the present invention

[0057] refer to Figures 2 to 4-2 In this embodiment, the end sealing assembly 20 includes the sealing ring protection piece 2 for the puncture device described in Embodiment 1.

[0058] The end sealing assembly 20 includes a sealing ring protection piece 2 for the puncture device, a funnel-shaped sealing ring 1, and a molded positioning component 21.

[0059] refer to Figure 2-1 and Figure 3-1 The sealing ring protective piece 2 for the puncture device is installed around the molded positioning member 21 via the connecting end 22-1, and is connected to the molded positioning member 21 to form a cylindrical or near-cylindrical structure with a crack 22-21 at the bottom; the funnel-shaped sealing ring 1 has an installation position 11, and the molded positioning member 21 has a structure that matches the installation position 11 and is embedded in the installation position 11. The protective piece 22-2 automatically deforms and is alternately distributed to form a funnel shape, which fits against the funnel surface of the funnel-shaped sealing ring 1 to form the end sealing assembly 20, which protects the funnel-shaped sealing ring 1. (Reference) Figures 4 to 4-2 .

[0060] The cylindrical structure can be formed by a single sealing ring protection piece 2 for the puncture device surrounding the molded positioning member 21, or by multiple sealing ring protection pieces 2 for the puncture device sequentially surrounding the molded positioning member 21.

[0061] refer to Figures 2 to 2-2The molded positioning component 21 is provided with an annular positioning groove 21-1, and the connecting end 22-1 is a sheet-like or strip-like structure. The connecting end 22-1 is embedded in the annular positioning groove 21-1 to form a cylindrical structure. This embedded connection method of the positioning groove and the sheet-like structure makes installation very convenient, and the molded positioning component 21 can be made with a smooth outer surface, which can fit and fix well with the funnel-shaped sealing ring 1.

[0062] refer to Figure 3 and Figure 3-1 The molding positioning component 21 is provided with a positioning pin 21-2, and the connecting end 22-1 is provided with a connecting hole 22-11. The connecting hole 22-11 is embedded in the positioning pin 21-2 to connect the strip-shaped protective piece 22 to the molding positioning component 21. This connection method of positioning pin and connecting hole can effectively prevent the strip-shaped protective piece 22 from detaching from the molding positioning component 21, making the connection more secure.

[0063] The applicant has only provided specific examples of the two connection methods between the strip-shaped protective sheet 22 and the molded positioning member 21. In practical applications, those skilled in the art can design different connection methods as needed, such as bonding, snap-fit, and other methods. The applicant will not provide specific examples here, but none of them will depart from the scope of protection of this application.

[0064] In this embodiment, the molded positioning element 21 is made of a rigid medical material. The molded positioning element 21 is typically made of medical materials with a certain degree of rigidity, such as PC or PP. Because the molded positioning element 21 has good rigidity, when it is embedded in the mounting position 11, the funnel-shaped sealing ring 1, made of a soft material, can effectively enclose the molded positioning element 21, making it less likely for the molded positioning element 21 to come out.

[0065] In this embodiment, the molding positioning component 21 adopts a simple ring structure, which is convenient for installation. The molding positioning component 21 can also be a ring structure, a funnel-shaped structure, or an elliptical mechanism. Alternatively, it can adopt a funnel-shaped structure to adapt to the funnel-shaped sealing part of the funnel-shaped sealing ring 1 as needed, or be designed into an elliptical or other shapes according to the product appearance requirements. The applicant will not give examples here, but none of them depart from the protection scope of this application.

[0066] To match different installation structures, the end sealing assembly 20 can also be used with other connection structures such as positioning plates to achieve effective installation in the puncture device of the present invention. The applicant will not give specific examples here, but they all do not depart from the protection scope of this application.

[0067] Example 3: The puncture device of the present invention

[0068] refer to Figures 5 to 6 In this embodiment, the puncture device 900 includes the end sealing assembly 20 described in Embodiment 2.

[0069] The puncture device 900 includes a puncture rod 100 and a puncture sheath 200; the puncture sheath 200 includes an end cap 201 and a cannula assembly 202, and the end sealing assembly 20 is embedded between the upper shell 201-1 and the lower shell 201-2 of the end cap 201.

[0070] refer to Figure 4-1 The puncture sheath 200 includes an end cap 201 and a cannula assembly 202. The cannula assembly 202 is located at the distal end of the end cap 201. The cannula assembly 202 can be integrally manufactured with the end cap 201, or it can be connected as a whole through a detachable connection. The end cap 201 includes an upper shell 201-1 and a lower shell 201-2. A positioning pressure ring 3, the end sealing assembly 20, and an inner cavity seal 4 are sequentially arranged between the upper shell 201-1 and the lower shell 201-2. When the instrument is inserted, the funnel-shaped sealing ring 1 wraps around the instrument to seal it. When the instrument is withdrawn, the inner cavity seal 4 resets under the action of intra-abdominal air pressure to achieve a seal.

[0071] The puncture device 900 of the present invention is equipped with the end sealing assembly 20, which is composed of the sealing ring protective sheet of the present invention for puncture devices. During clinical use, it not only ensures good puncture resistance, but also maintains very low movement resistance for a long time, making the clinical use process very safe and convenient.

[0072] It should be noted that the structures disclosed and described herein can be replaced by other structures with the same effect, and the embodiments described herein are not the only structures for implementing the present invention. Although preferred embodiments of the present invention have been described and illustrated herein, those skilled in the art will understand that these embodiments are merely illustrative, and those skilled in the art can make numerous variations, modifications, and substitutions without departing from the present invention. Therefore, the scope of protection of the present invention should be defined in accordance with the spirit and scope of the appended claims.

Claims

1. A sealing ring protective sheet for a puncture instrument, characterized in that: The sealing ring protective piece (2) for the puncture device is a strip-shaped protective piece (22); A. The strip-shaped protective sheet (22) is made of flexible and / or elastic material and has a strip-shaped structure; the strip-shaped protective sheet (22) includes a connecting end (22-1) and a protective sheet (22-2); B. The strip-shaped protective sheet (22) includes at least two protective sheets (22-2), and the protective sheets (22-2) are disposed below the connecting end (22-1) and distributed along the length direction of the connecting end (22-1); C. The strip-shaped protective sheet (22) is connected end to end to form a cylindrical or near-cylindrical structure with cracks (22-21) at the bottom; after the sealing ring protective sheet (2) for the puncture device is installed into the funnel-shaped sealing ring (1), the protective sheet (22-2) automatically deforms and is distributed alternately to form a funnel shape, which fits against the funnel surface of the funnel-shaped sealing ring (1) to protect the funnel-shaped sealing ring (1).

2. The sealing ring protective sheet for a puncture device according to claim 1, characterized in that: The strip-shaped protective sheet (22) is a thin rectangular strip structure, the cracks (22-21) are distributed along the width direction, and the length of the cracks (22-21) is not less than 1 / 2 of the width of the rectangular strip structure.

3. The sealing ring protective sheet for a puncture device according to claim 1, characterized in that: The strip-shaped protective sheet (22) contains 6 or more of the protective sheets (22-2).

4. The sealing ring protective sheet for a puncture device according to claim 1, characterized in that: The protective sheet (22-2) is rectangular, trapezoidal, triangular, or arc-shaped.

5. An end-sealing assembly, characterized in that: The end sealing assembly (20) includes the sealing ring protection piece (2) for the puncture device as described in claim 1.

6. The end sealing assembly according to claim 5, characterized in that: The end sealing assembly (20) includes a sealing ring protection piece (2) for the puncture device, a funnel-shaped sealing ring (1) and a molding positioning piece (21); the sealing ring protection piece (2) for the puncture device is connected to the molding positioning piece (21) through the connecting end (22-1) to form a cylindrical or near-cylindrical structure with a crack (22-21) at the bottom; the funnel-shaped sealing ring (1) is provided with an installation position (11), and the molding positioning piece (21) has a structure that matches the installation position (11) and is embedded in the installation position (11); the protection piece (22-2) automatically deforms and is alternately distributed to form a funnel shape, which fits against the funnel surface of the funnel-shaped sealing ring (1) to form the end sealing assembly (20).

7. The sealing ring protective sheet for a puncture device according to claim 6, characterized in that: The molded positioning component (21) is provided with an annular positioning groove (21-1), and the connecting end (22-1) is a sheet-like or strip-like structure. The connecting end (22-1) is embedded in the annular positioning groove (21-1) to form a cylindrical structure.

8. The sealing ring protective sheet for a puncture device according to claim 6, characterized in that: The molding positioning component (21) is provided with a positioning pin (21-2), and the connecting end (22-1) is provided with a connecting hole (22-11). The connecting hole (22-11) is embedded in the positioning pin (21-2) to realize the connection between the strip-shaped protective sheet (22) and the molding positioning component (21).

9. The sealing ring protective sheet for a puncture device according to claim 6, characterized in that: The molded positioning element (21) is made of rigid medical material.

10. The sealing ring protective sheet for a puncture device according to claim 6, characterized in that: The molding positioning component (21) is a ring structure, a funnel-shaped structure, or an elliptical mechanism.

11. A puncture device, characterized in that: The puncture device (900) includes the sealing ring protection piece (2) for the puncture device as described in claim 1.

12. The puncture device according to claim 11, characterized in that: The puncture device (900) includes the end sealing assembly (20) as described in claim 5.

13. The puncture device according to claim 13, characterized in that: The puncture device (900) includes a puncture rod (100) and a puncture sheath (200); the puncture sheath (200) includes an end cap (201) and a cannula assembly (202), and the end sealing assembly (20) is embedded between the upper shell (201-1) and the lower shell (201-2) of the end cap (201).

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